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Finding the Fourth Proportional to 64,778.88, 97,174.74 and 18,031.74

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Solution

The fourth proportional to 64,778.88, 97,174.74 and 18,031.74 is: 27,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,778.88 : 97,174.74 = 18,031.74 : x
  2. Step 2: Convert to fraction form
    64,778.88/97,174.74 = 18,031.74/x
  3. Step 3: Cross multiply
    64,778.88x = 97,174.74 × 18,031.74
  4. Step 4: Simplify right side
    64,778.88x = 1,752,229,646.25
  5. Step 5: Solve for x
    x = 1,752,229,646.25/64,778.88
  6. Step 6: Final answer
    x = 27,049.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.